NEET Botany Plant Growth and Development Questions Solved

AIIMS - 2013

Which of the following plant growth regulators (PGRs) promotes root initiation, flowering and
induced parthenocarpy?

(a) Gibberellin (b) Auxin

(C) Cytokinin (d) Ethylene

Audio Explanation:

(b) Auxins promote root initiation at a concentration which otherwise is inhibitory for growth of intact root. Auxins are often employed for inducing flowering in litchi and pineapple. Application of auxins to unpollinated pistils make them develop into seedless fruits or parthenocarps.

Difficulty Level:

  • 15%
  • 72%
  • 8%
  • 7%